[Spice-devel] [PATCH spice-gtk] Fix _FORTIFY_SOURCE redefine error

[Uri Lublin]

On 09/06/2013 10:59 PM, Dunrong Huang wrote:
> If the _FORTIFY_SOURCE has been already defined, we shouldn't redefine
> it, or it will raise a build error as below:
>
> In file included from spice-audio.c:36:0:
> ../config.h:12:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
> spice-audio.c:1:0: note: this is the location of the previous definition
>
> Suggested-by: Christophe Fergeau <cfergeau at redhat.com>
> Signed-off-by: Dunrong Huang <riegamaths at gmail.com>
> ---
>   m4/spice-compile-warnings.m4 | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/m4/spice-compile-warnings.m4 b/m4/spice-compile-warnings.m4
> index 31fc0fc..533bac6 100644
> --- a/m4/spice-compile-warnings.m4
> +++ b/m4/spice-compile-warnings.m4
> @@ -104,7 +104,7 @@ AC_DEFUN([SPICE_COMPILE_WARNINGS],[
>       # Use improved glibc headers
>       AH_VERBATIM([FORTIFY_SOURCE],
>       [/* Enable compile-time and run-time bounds-checking, and some warnings. */
> -     #if defined __OPTIMIZE__ && __OPTIMIZE__
> +     #if !defined _FORTIFY_SOURCE &&  defined __OPTIMIZE__ && __OPTIMIZE__
>        # define _FORTIFY_SOURCE 2
>        #endif
>       ])

Ack.